div, html, body {
    padding: 0;
    margin: 0
}

html, body {
    height: 100%
}

.router-loading {
    overflow: hidden;
    background: #ecf0f1;
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    vertical-align: middle;
}
